Targus PAUM007U Wireless Optical Mouse with Charger Wireless Optical Mouse (5 Button) Allows You to Wirelessly Navigate Up to 6 Feet From Your Notebook or Desktop Computer - Includes a Desktop Charger Comes with Rechargeable Batteries In The Mouse - Place The Mouse In The Charger Overnight for a Full Charge Small, Lightweight Ergonomic Design - Created for People On The Go Optical Sensor for Surface and Space Freedom Digital Signal Processor Reads and Follows Your Mouse Moves Which Eliminates Erratic Cursor Movement